﻿#region License
// Copyright 2009 Buu Nguyen (http://www.buunguyen.net/blog)
// 
// Licensed under the Apache License, Version 2.0 (the "License"); 
// you may not use this file except in compliance with the License. 
// You may obtain a copy of the License at 
// 
// http://www.apache.org/licenses/LICENSE-2.0 
// 
// Unless required by applicable law or agreed to in writing, software 
// distributed under the License is distributed on an "AS IS" BASIS, 
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
// See the License for the specific language governing permissions and 
// limitations under the License.
// 
// The latest version of this file can be found at http://www.codeplex.com/aspmvcvalidation
#endregion

using System;
using Microsoft.Practices.EnterpriseLibrary.Validation;
using Microsoft.Practices.EnterpriseLibrary.Validation.Validators;

namespace Mvc.Validation.Validators
{
    /// <summary>
    /// This validator delegates the actual validation to an instance of the supplied 
    /// <see cref="IValidator"/> type.
    /// </summary>
    internal sealed class DelegatingValidator : ValueValidator
    {
        /// <summary>
        /// The custom validation type used to perform the actual server-side validation.
        /// Must be of type <code>IValidator</code>.
        /// </summary>
        public Type ValidatorType { get; set; }

        public DelegatingValidator(Type validatorType)
			: base(null, null, false)
        {
            ValidatorType = validatorType;
        }

        protected override void DoValidate(object objectToValidate,
			object currentTarget,
			string key,
			ValidationResults validationResults)
        {
            var validator = (IValidator)Activator.CreateInstance(ValidatorType);
            if (!validator.IsValid(objectToValidate))
            {
                LogValidationResult(validationResults, GetMessage(objectToValidate, key), currentTarget, key);
            }
        }

        protected override string DefaultNonNegatedMessageTemplate
        {
            get { return null; }
        }

        protected override string DefaultNegatedMessageTemplate
        {
            get { return null; }
        }
    }
}
